replace 'virtual ... OVERRIDE' with '... override'

base/metrics/histogram_samples.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/metrics/histogram_samples.h"
 
 #include "base/compiler_specific.h"
 #include "base/pickle.h"
 
 namespace base {
 
 namespace {
 
 class SampleCountPickleIterator : public SampleCountIterator {
  public:
   explicit SampleCountPickleIterator(PickleIterator* iter);
 
-  virtual bool Done() const OVERRIDE;
-  virtual void Next() OVERRIDE;
-  virtual void Get(HistogramBase::Sample* min,
-                   HistogramBase::Sample* max,
-                   HistogramBase::Count* count) const OVERRIDE;
+  bool Done() const override;
+  void Next() override;
+  void Get(HistogramBase::Sample* min,
+           HistogramBase::Sample* max,
+           HistogramBase::Count* count) const override;
+
  private:
   PickleIterator* const iter_;
 
   HistogramBase::Sample min_;
   HistogramBase::Sample max_;
   HistogramBase::Count count_;
   bool is_done_;
 };
 
 SampleCountPickleIterator::SampleCountPickleIterator(PickleIterator* iter)
@@ skipping 95 matching lines @@
 }
 
 SampleCountIterator::~SampleCountIterator() {}
 
 bool SampleCountIterator::GetBucketIndex(size_t* index) const {
   DCHECK(!Done());
   return false;
 }
 
 }  // namespace base